CN103563237B - Rotary electric machine controller - Google Patents
Rotary electric machine controller Download PDFInfo
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- CN103563237B CN103563237B CN201280025896.8A CN201280025896A CN103563237B CN 103563237 B CN103563237 B CN 103563237B CN 201280025896 A CN201280025896 A CN 201280025896A CN 103563237 B CN103563237 B CN 103563237B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P21/00—Arrangements or methods for the control of electric machines by vector control, e.g. by control of field orientation
- H02P21/36—Arrangements for braking or slowing; Four quadrant control
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
- B60L3/003—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to inverters
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
- B60L3/0046—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to electric energy storage systems, e.g. batteries or capacitors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
- B60L3/0061—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to electrical machines
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P3/00—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters
- H02P3/06—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter
- H02P3/18—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter for stopping or slowing an ac motor
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Control Of Ac Motors In General (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Hybrid Electric Vehicles (AREA)
Abstract
When the connection of electric rotating machine drive unit and DC power portion is cut-off, the electric power regenerated via inverter from electric rotating machine is reduced rapidly.In the orthogonal coordinate system of 2 axles with electric rotating machine synchronous rotary, when the connection being judged to be DC power portion and inverter is dissengaged positions, control inverter is performed to make zero direct torque of the regenerative torque vanishing of electric rotating machine to the inverter control portion controlling control inverter along the composite vector of the exciting current of each axle and drive current and armature supply, and performs and exciting current is changed to increase the high damage control of armature supply while the torque instruction in maintenance zero direct torque.
Description
Technical field
The present invention relates to rotary electric machine controller, it is for controlling the electric rotating machine drive unit possessing inverter, this inverter is folded in be possessed between the DC power portion of electrical storage device and the electric rotating machine exchanged, thus carries out power converter between the direct current power and the alternating electromotive force of electric rotating machine of DC power portion.
Background technology
In order to alleviate because of the consumption of fossil fuel the burden that environment causes, propose utilize the electric rotating machine exchanged to carry out driving electric automobile, utilize the electric rotating machine that exchanges and internal combustion engine to carry out the hybrid vehicle driven.In such electric automobile, hybrid vehicle, electric rotating machine is connected with battery electric rotating machine being supplied to electric power.Electric rotating machine is not limited to the function of the motor of the drive source had as vehicle, also with the function of carrying out the generator generated electricity as the kinetic energy based on vehicle, internal combustion engine etc.The electric power sent by electric rotating machine is reproduced and accumulates in battery.Wherein, because such battery is DC power supply, so generally possess the inverter carrying out power converter between direct current power and alternating electromotive force between battery and electric rotating machine.
But, sometimes between battery and electric rotating machine, between battery and inverter, more specifically possess opening and closing device (contactor).Under the state that contactor is closed, battery is electrically connected with inverter (and electric rotating machine), and under the state that contactor is opened, the electrical connection of battery and inverter (and electric rotating machine) is cut off.Such as, under the main switch of vehicle is in the situation of off-state, the situation needing to guarantee the safety of vehicle etc., this contactor is in opening.In this situation, cut off to the electric power contactor of battery recycling from electric rotating machine via inverter.Therefore, this electric power is such as accumulated to the smmothing capacitor possessed between contactor and inverter, rises to the direct voltage that inverter applies.A kind of connection between battery and electric rotating machine is disclosed when being removed in Japanese Unexamined Patent Publication 2009-232652 publication (patent documentation 1), according to the mode control inverter of the torque vanishing of electric rotating machine, regenerated electric power is reduced, rotary electric machine controller that the voltage rise of smmothing capacitor is suppressed (the 52nd section etc.).
On the other hand, in recent years in order to realize space saving, the cost degradation of rotary electric machine controller, require the electric capacity reducing smmothing capacitor.If the electric capacity of smmothing capacitor diminishes, then when contactor becomes opening, voltage rises rapidly.Therefore, wish to suppress regenerated electric power further compared with patent documentation 1.
Patent documentation 1: Japanese Unexamined Patent Publication 2009-232652 publication
Summary of the invention
Based on above-mentioned background, it is desirable to, when the connection of the electric rotating machine drive unit and DC power portion that possess inverter is cut-off, the regenerated electric power regenerated via inverter from electric rotating machine to be reduced rapidly.
In view of above-mentioned problem, the structural feature of the rotary electric machine controller that the present invention relates to is,
It is the rotary electric machine controller that the electric rotating machine drive unit possessing inverter is controlled, this inverter is folded in be possessed between the DC power portion of electrical storage device and the electric rotating machine exchanged, thus power converter is carried out between the direct current power and the alternating electromotive force of described electric rotating machine of described DC power portion
Described rotary electric machine controller possesses inverter control portion, this inverter control portion is in the orthogonal coordinate system of 2 axles of the rotation synchronous rotary with described electric rotating machine, control to control described inverter along the exciting current of each axle of this orthogonal coordinate system and the composite vector of drive current and armature supply
The connection of described inverter control portion to described DC power portion and described inverter is that dissengaged positions judges, when being judged to be this dissengaged positions, described inverter control portion performs and controls described inverter to make zero direct torque of the regenerative torque vanishing of described electric rotating machine, and execution makes described exciting current change to increase the high damage control of described armature supply while maintaining the torque instruction in described zero direct torque.
By performing zero direct torque according to the mode control inverter of the regenerative torque vanishing of electric rotating machine, regenerated electric power can be suppressed.In addition, by performing the high damage control making exciting current change in the mode increasing armature supply while the torque instruction in maintenance zero direct torque, additionally can consume regenerated electric power, and then can regenerated electric power be suppressed.As a result, when the connection of the electric rotating machine drive unit and DC power portion that possess inverter is cut-off, the regenerated electric power regenerated via inverter from electric rotating machine can be made to reduce rapidly.
General when making torque instruction change, the vibration of accompanying in order to ensure the tracing property controlled or suppression and change sharply and setting torque rate of change limits.But when the connection of DC power portion and inverter becomes dissengaged positions, in order to make rapidly regenerated electric power reduce, preferred regenerative torque also reduces rapidly.Therefore, preferably large torque rate of change can be allowed in the scope of Tracing Control.As a mode, preferably, the described inverter control portion of the rotary electric machine controller that the present invention relates to is when performing described zero direct torque under described dissengaged positions, and the limits value of torque rate of change when being reduced to zero gradually by making the regenerative torque of described electric rotating machine is set as the value that the limits value of the torque rate of change under the state be maintained than the connection of described DC power portion and described inverter is large.
As mentioned above, when making torque instruction change, in order to ensure the vibration that the traceability controlled or suppress accompanies with change sharply, large multipair torque rate of change setting limits.This torque rate of change can take different values according to the rotary speed of electric rotating machine, but mostly uses constant value in common control.But, when the connection of DC power portion and inverter becomes dissengaged positions, preferably make rapidly regenerated electric power reduce.Therefore, preferably at the mode control inverter can pressing the regenerative torque vanishing of electric rotating machine in the scope of Tracing Control with large torque rate of change.As a mode, the described inverter control portion of the rotary electric machine controller that preferably the present invention relates to, when performing described zero direct torque under described dissengaged positions, sets torque rate of change when making the regenerative torque of described electric rotating machine be reduced to zero gradually changeably according to the rotary speed of described electric rotating machine.
But, even if at execution zero direct torque and when performing the high damage control, the size that also there is regenerated electric power reaches the possibility of the allowance of electric rotating machine drive unit.This allowance such as can judge according to the direct voltage of inverter (between positive and negative polarities voltage).And, the safety of electric rotating machine drive unit is preferably guaranteed according to this result of determination.As a mode; preferably in the rotary electric machine controller that the present invention relates to; described inverter is configured to have multiple switch element and has each fly-wheel diode be connected in parallel with described switch element; even if after becoming described dissengaged positions described inverter direct current positive and negative polarities between the voltage between terminals of smmothing capacitor that is also maintained of connection when becoming more than the overvoltage threshold value of regulation, described inverter control portion performs the shutdown making the whole described switch element of the described inverter of formation become off-state and controls.
Accompanying drawing explanation
Fig. 1 is the block diagram of the configuration example schematically showing electric rotating machine drive unit.
Fig. 2 is the key diagram of the principle schematically showing zero direct torque and regenerated electric power suppression process in current vector space (representing the orthogonal coordinate system of current vector).
Fig. 3 represents the flow chart comprising regenerated electric power and suppress the handling process of the control entirety of process.
Fig. 4 represents that regenerated electric power suppresses the flow chart of handling process.
Fig. 5 is the flow chart representing high damage control handling process.
Fig. 6 is the flow chart representing convergence process flow process.
Fig. 7 is the block diagram of other configuration examples schematically showing electric rotating machine drive unit.
Fig. 8 is the block diagram of other configuration examples schematically showing electric rotating machine drive unit.
Embodiment
Below, the situation of the rotary electric machine controller controlled for the drive device for hybrid vehicle (electric rotating machine drive unit) the present invention be applied to so-called double motor partitioning scheme, is described embodiments of the present invention based on accompanying drawing.This motor vehicle driven by mixed power possesses not shown internal combustion engine and pair of motors (electric rotating machine) MG1, MG2 as drive force source.In addition, the drive unit of motor vehicle driven by mixed power is configured to possess the differential gearing (not shown) of the power distribution output of this internal combustion engine being distributed to the first motor MG1 side, wheel and the second motor MG2 side.In the present embodiment, drive unit 1(electric rotating machine drive unit) be configured to for driving two motor MG1, MG2 device.Here, first motor MG1 and the second motor MG2 is the motor utilizing polyphase ac (being 3 cross streams) to carry out the interchange of action here, is built-in permanent-magnet synchronous motor (IPMSM:interiorpermanentmagnetsynchronousmotor).These motor MG1, MG2 also can carry out action as generator (generator) as motor as required.Below, except needing to distinguish especially the situation of two motor, be described referred to as motor MG.
First motor MG1 and the second motor MG2 as shown in Figure 1, via drive unit 1 with and battery 3(DC power portion) be electrically connected.In addition, drive unit 1 and battery 3 are via contactor 2(opening and closing device) and be electrically connected.Under the state that contactor 2 is closed, drive unit 1 is electrically connected with battery 3, and under the state that contactor 2 is opened, battery 3 is cut off with the electrical connection of drive unit 1.Such as, the main switch of vehicle be in off-state situation, need to guarantee that the situation of the safety of vehicle is inferior, this contactor 2 is in opening.
Drive unit 1 possesses the first inverter 5A corresponding with the first motor MG1 and second inverter 5B this two inverters corresponding with the second motor MG2.Below, except needing to distinguish especially the situation of two inverters 5A, 5B, be called that inverter 5 is described.In addition, in the present embodiment, drive unit 1 possesses two inverters 5(5A, 5B) a transducer 4 sharing.Transducer 4 is at two inverters 5(5A, 5B) the voltage changer that between the system voltage Vdc that shares and the voltage of battery 3, direct current power (voltage) converted.In addition, drive unit 1 to possess the positive and negative polarities of battery 3 between voltage smoothing the first smmothing capacitor Q1 and using the second smmothing capacitor Q2 of the system voltage Vdc smoothing of the direct voltage as inverter 5.
The direct voltage (system voltage Vdc) of the voltage between terminals of the second smmothing capacitor Q2, i.e. inverter 5 is detected by voltage sensor 62 and is provided to control device 10(rotary electric machine controller) inverter control portion 11.Battery 3 is configured to supply electric power via transducer 4 and two inverters 5A, 5B to motor MG1, MG2, and can put aside the electric power obtained by motor MG1, MG2 generating.That is, the battery 3 in present embodiment is equivalent to " possessing the DC power portion of electrical storage device " in the present invention.As such battery 3, such as, can use the various secondary cell such as nickel-hydrogen secondary cell, lithium rechargeable battery, capacitor or their combination etc.In addition, also battery 3 and transducer 4 can be merged " possessing the DC power portion of electrical storage device " of corresponding in the present invention.In this situation, owing to can the actual electrical connection by battery 3 and transducer 4, inverter 5 cut off by making the switch element of formation transducer 4 become off-state, so except contactor 2, transducer 4 also possesses the function of contactor (opening and closing device).
Transducer 4 is configured to convert to the direct voltage of battery 3 dc-dc generating desired system voltage Vdc.Wherein, when motor MG1, MG2 play function as generator, system voltage Vdc step-down is supplied to battery 3, this battery 3 is charged.Transducer 4 is configured to possess reactor L1, switch element E1 with E2 and becomes mutually rightabout (anti-parallel connection is connected) sustained diode 1 and D2 with the through-flow direction that switch element E1 with E2 is connected in parallel into rectification part respectively.Here, transducer 4 possesses a pair upper arm element E1 and underarm element E2 that are connected in series as switch element.As these switch elements E1, E2, use igbt (insulatedgatebipolartransistor, IGBT) in this example.Besides igbts, the power transistor of the various structure such as bipolar sexual type, field effect type, MOS type can be used.This switch element E3 ~ E14 for the inverter 5 of following explanation too.
Switch element E1, E2 carry out action according to the control signal S1, the S2 that export from control device 10 respectively.In the present embodiment, control signal S1, S2 are the switch controlling signals controlled the switch (switching) of each switch element E1, E2, more specifically, are the gate drive signals of the grid driving each switch element E1, E2.Thus, the output voltage of battery 3 is boosted to desired system voltage Vdc by transducer 4, and is supplied to inverter 5.Wherein, when not carrying out the boosting utilizing transducer 4, system voltage Vdc is equal with the voltage of battery 3.
First inverter 5A carries out having the power converter between the direct current power of system voltage Vdc and the alternating electromotive force of the first motor MG1.Second inverter 5B carries out having the power converter between the direct current power of system voltage Vdc and the alternating electromotive force of the second motor MG2.First inverter 5A and the second inverter 5B is made up of bridgt circuit, possesses many group switch element E3 ~ E8 and E9 ~ E14 respectively.
First inverter 5A and the second inverter 5B is configured to possess pair of switches element respectively for each phase (this 3 phase of U phase, V phase, W phase) the respective brachium pontis (leg) of the first motor MG1 and the second motor MG2.Specifically, the brachium pontis that the brachium pontis that formed by upper arm element E3 and underarm element E4 of U phase and upper arm element E9 and underarm element E10 are formed is formed.The brachium pontis that V phase is formed by upper arm element E5 and underarm element E6 and the brachium pontis that upper arm element E11 and underarm element E12 is formed are formed.The brachium pontis that W phase is formed by upper arm element E7 and underarm element E8 and the brachium pontis that upper arm element E13 and underarm element E14 is formed are formed.As these switch elements E3 ~ E14, use IGBT in the present embodiment.In addition, each switch element E3 ~ E14 is connected with sustained diode 3 ~ D14 anti-parallel connection respectively.
Switch controlling signal S3 ~ S14 that switch element E3 ~ E14 exports according to the inverter control portion 11 from control device 10 respectively carries out action.In the present embodiment, switch controlling signal S3 ~ S14 is the gate drive signal of the grid driving each switch element E3 ~ E14.Inverter 5 is supplied to motor MG after the direct current power of system voltage Vdc is transformed into alternating electromotive force, motor MG is exported and not shown traveling controls target torque TM(TM1, TM2 that the upper control device such as electronic control unit (electroniccontrolunit, ECU) provides) corresponding torque.Now, each switch element E3 ~ E14 carries out in accordance with control models such as pulse width modulation control model described later (being suitably called below " pwm pattern "), rectangular-wave control mode according to switch controlling signal S3 ~ S14 switch motion.In addition, when motor MG plays function as generator, the alternating electromotive force obtained by generating electricity is transformed into direct current power by inverter 5, and regenerates to battery 3 via transducer 4.
Actual current Iu1, Iv1, Iw1, Iu2, Iv2, Iw2 of flowing between inverter 5 and the coil of each phase of motor MG are by current sensor 63(63A, 63B) detect and be output to control device 10.In addition, illustrate the formation of the mutually whole electric current of detection 3 in this example, but be in poised state mutually due to 3, the summation of the instantaneous value of electric current is zero, so transducer also can be utilized only to detect the electric current of 2 phases, in control device 10, obtained the electric current of residue 1 phase by computing.In addition, the rotor of motor MG at the position of magnetic pole θ (θ 1, θ 2) in each moment by rotation sensor 65(65A, 65B) detect, and export control device 10 to.Rotation sensor 65 is such as made up of decomposer etc.Here, position of magnetic pole θ 1, θ 2 illustrate the anglec of rotation of the rotor in electric angle.
The each function part carrying out the control device 10 of the control of drive unit 1 by using logical circuits such as microcomputers as core component, is formed for carrying out the hardware of various process or software (program) or hardware and software both sides to the data be transfused to.In the present embodiment, control device 10 is configured to possess inverter control portion 11, and this inverter control portion 11 carries out the Current Feedback Control employing vector majorization method, and controls motor MG1, MG2 via inverter 5A, 5B.As other function parts, control device 10 also possess such as control transducer 4 generate desired by system voltage Vdc DC voltage conversion control not shown converter control unit.
As the mode (mode that voltage waveform controls) of the switching mode of the switch element E3 ~ E14 of formation inverter 5, inverter control portion 11 at least has pulse width modulation (PWM:pulsewidthmodulation) and controls and square wave control (mono pulse control) these two control modes.In addition, as the mode of the excitation con-trol of stator, inverter control portion 11 have to motor current export breakdown torque maximum torque control, for motor current with the excitation con-trol usually such as the Energy optimization control of maximal efficiency drive motor; And flow through to torque do not have helpful exciting current to weaken excitation magnetic flux weaken excitation con-trol, the excitation such as the enhancing excitation con-trol adjustment that strengthened by excitation magnetic flux in contrast controls.
In the present embodiment, the Current Feedback Control of the current vector control methods that have employed in the orthogonal coordinate system (orthogonal vectors space) of 2 axles synchronously rotated with the rotation of motor MG is performed to control motor MG.In current vector control methods, in the orthogonal coordinate system (orthogonal vectors space) of such as, d axle in the direction along the excitation magnetic flux formed by permanent magnet and electric this 2 axle of q axle of advanced pi/2 mutually of this d axle relative, carry out Current Feedback Control.Inverter control portion 11 decides torque instruction T* based on the target torque TM of the motor MG as control object, determines current-order Id*, Iq* of d axle and q axle.And, actual current Iu1, Iv1, Iw1 that inverter control portion 11 obtains current-order Id*, Iq* and flows through between each phase coil of motor MG, the deviation of Iu2, Iv2, Iw2, and carry out proportional plus integral control computing (PI control algorithm), PID control parameter computing (pid control computation), finally determine the voltage instruction of 3 phases.Based on this voltage instruction, generate switch controlling signal S3 ~ S14.Mutual coordinate transform between 3 phase spaces (3 axis coordinate systems on two dimensional surface) of the reality of motor MG and the orthogonal vectors space (orthogonal coordinate systems of 2 axles) of 2 axles carries out based on the position of magnetic pole θ detected by rotation sensor 65.In addition, rotary speed ω (angular speed), the rotating speed N [ rpm ] of motor MG are according to rotation sensor 65(65A, 65B) testing result derive.
But as mentioned above, in the present embodiment, the on-off mode of inverter 5 has pwm pattern and rectangular-wave control mode.PWM controls to be that a kind of one as described below controls, namely, PWM controls the duty ratio of each pulse to be set to, as the output voltage waveforms of the inverter 5 of each phase of U, V, W PWM waveform by between the high period that upper arm element becomes conducting state and the set that becomes the pulse formed between the low period of conducting state of underarm element form, and its fundametal compoment is approximately sinusoidal wave shape in certain period.Comprise known sinusoidal wave PWM (SPWM:sinusoidalPWM), space vector PWM(SVPWM:spacevectorPWM), ovennodulation PWM control etc.In the present embodiment, in PWM controls, with the composite vector of drive current (q shaft current) that is armature supply, control is carried out to the exciting current (d shaft current) of each axle along orthogonal coordinate system and carrys out drived control inverter 5.That is, the current phase angle (q shaft current vector and angle formed by armature supply vector) of the armature supply in inverter control portion 11 control d-q axial vector space (d-q axle orthogonal coordinate system) carrys out drived control inverter 5.Therefore, PWM controls to be also referred to as current phase control.
On the other hand, square wave controls (mono pulse control) is the mode that the voltage-phase controlling three-phase alternating current controls inverter 5.The voltage-phase of three-phase alternating current is equivalent to the phase place of the voltage instruction value of 3 phases.In the present embodiment, square wave control be a kind of rotation Synchronization Control as described below, that is, each switch element of inverter 5 conducting and disconnect carry out 1 time in the electric angle of motor MG every 1 cycle, export 1 pulse for each in electric angle every 1 cycle.In the present embodiment, because the voltage-phase by controlling 3 phase voltages drives inverter 5, control so square wave controls to be called as voltage-phase.
In addition, as mentioned above, in the present embodiment, as the mode of excitation con-trol, usual excitation con-trol and excitation adjustment is had to control.The control mode of the basic current instruction value (instruction of d shaft current, the instruction of q shaft current) that the usual excitation con-trol such as maximum torque control, Energy optimization control is the use of the target torque TM based on motor MG and sets.On the other hand, weaken excitation con-trol and be excitation magnetic flux in order to weaken from stator and the control mode that the d shaft current instruction in this basic current instruction value is adjusted.In addition, excitation con-trol is strengthened to be excitation magnetic flux in order to strengthen from stator and the control mode that adjusts the d shaft current instruction in this basic current instruction value.When carrying out weakening excitation con-trol, enhancing excitation con-trol etc., so adjustment d shaft current, is called excitation adjustment electric current here by this adjusted value.
As mentioned above, motor MG, according to target torque, is controlled by drived control by current phase control, voltage-phase.But when in motor MG driving process, the main switch of vehicle is in off-state, or when needing to guarantee vehicle safe, contactor 2 becomes opening, battery 3(DC power portion) be cut off with the connection of inverter 5.In addition, now transducer 4 is shut down, and upper arm element E1, underarm element E2 are all in off-state.Here, if motor MG continues to rotate, then the electric power produced according to motor MG is not reproduced battery 3, and is charged to the second smmothing capacitor Q2 making the direct voltage of inverter 5 (system voltage Vdc) level and smooth.By this charging, the voltage between terminals of the second smmothing capacitor Q2, i.e. system voltage Vdc rise.Be no more than the withstand voltage mode that is withstand voltage, i.e. switch element E3 ~ E14 of inverter 5 according to system voltage Vdc, perform the following regenerated electric power described in detail and suppress process.
In the present embodiment, be in regeneration operating with at least one in the first motor MG1, the second motor MG2, under the state that its regenerated electric power is greater than traction electric power and regenerates to the direction of battery 3 via inverter 5, the situation that contactor 2 becomes opening is that example is described.In addition, be described by situation about controlling for pwm pattern with the motor MG in regeneration operating here.
Fig. 2 illustrates current vector space (representing the orthogonal coordinate system of current vector).In fig. 2, curve 100(101 ~ 103) be respectively represent motor MG export the vector locus of the armature supply of a certain torque etc. torque line.With etc. compared with torque line 101, be low torque etc. torque line 102, and with etc. compared with torque line 102, be low torque etc. torque line 103.Curve 200(201 ~ 204) represent constant current circle, curve 300 represents voltage velocity ellipse (voltage restriction is oval).Low current circle is the vector locus that armature supply becomes steady state value.Voltage velocity ellipse is the vector locus of the scope representing the current-order that can set according to the value of the rotary speed of motor MG and the direct voltage (system voltage Vdc) of inverter 5.The size of voltage velocity ellipse 300 decides based on the rotary speed ω (or rotating speed N) of system voltage Vdc and motor MG.Specifically, the footpath of voltage velocity ellipse 300 is directly proportional to system voltage Vdc, is inversely proportional to the rotary speed ω of motor MG.Current-order Id*, Iq* be set to be present in such current vector space (representing the orthogonal coordinate system of current vector) in constant current circle 200 etc. torque line 100 line on operating point in value.It is the mapping of regulation based on such current vector space (representing the orthogonal coordinate system of current vector) that current-order described later maps.
Here, suppose that motor MG carries out regeneration actions waiting operating point P1 place in torque line 101, contactor 2 becomes opening from closure state, and transducer 4 is also shut down.If the rising of the voltage between terminals of prediction the second smmothing capacitor Q2, then inverter control portion 11 performs regenerated electric power suppression process.Suppress process as regenerated electric power, first inverter control portion 11 performs and target torque TM is set as that zero with zero direct torque of the mode control inverter 5 of the regenerative torque vanishing according to motor MG.Operating point when regenerative torque is zero as shown in Figure 2, is the center (operating point P0) of constant current circle 200.Therefore, as represented with dotted arrow in Fig. 2, from operating point P1 to operating point P0, the absolute value (magnitude of current) of d shaft current and q shaft current is reduced.
But, in the regenerated electric power suppressing to apply to the second smmothing capacitor Q2, for the d shaft current being helpless to torque, preferably do not reduce the magnitude of current and flow continuously through and loss is increased more.Given this, suppress process as regenerated electric power, perform the high damage control that make use of d shaft current further.Specifically, with from current operating point P1 to become zero direct torque target operating point P0 migration in the same manner as, make q shaft current reduce and make torque close to zero, and d shaft current increased.That is, as in Fig. 2 with as shown in frame arrow, move to from current operating point P1 the operating point P2 that q shaft current is zero, the absolute value of d shaft current is larger than operating point P1.Here, operating point P2 is the center of voltage velocity ellipse 300.After arrival operating point P2, as used as shown in frame arrow in Fig. 2, under the state that the q shaft current contributing to torque is maintained zero, making the absolute value of d shaft current reduce, finally move to the operating point P0 of the target becoming zero direct torque.
Below, the flow chart of Fig. 3 ~ Fig. 6 is also utilized to suppress process to be described in detail to regenerated electric power.Fig. 3 represents the flow chart comprising regenerated electric power and suppress the handling process of the entirety of process.First, based on the not shown transducer of open and-shut mode, the detection signal of switch that represent contactor 2, the open and-shut mode (#101) of contactor 2 is judged.If it is determined that for contactor 2 is opening (contactor unlatchings), then inverter control portion 11 then judges whether voltage between terminals, i.e. the system voltage Vdc of the second smmothing capacitor Q2 exceed wanting no regenerated electric power to suppress to process the decision threshold TH1(#102 judged).If system voltage Vdc exceedes decision threshold TH1, then perform and use Fig. 4 ~ Fig. 6 to suppress process #200 at the regenerated electric power of following detailed description.
When being judged to be that in step #101 contactor 2 is closure states, or when being judged to be that in step #102 system voltage Vdc is below decision threshold TH1, perform usual vector majorization process (#106).That is, perform above-mentioned current phase to control or voltage-phase control.Wherein, for this usual vector majorization, the limits value LT [ N/s ] of the rate of change of each unit interval of the torque instruction T* set to carry out controlling according to target torque TM is set to usual torque rate of change limits value LT1 [ N/s ] (#104).In addition, the final goal torque T** set according to target torque TM is set to target torque TM(#105).When being controlled (pwm pattern) by current phase and performing usual vector majorization process, obtain the Id* as the instruction of d shaft current from the current-order mapping generated in advance based on torque characteristics.That is, according to the torque instruction T* set in the scope of the limits value LT of torque rate of change towards final goal torque T** from current torque, d shaft current instruction Id* is obtained from current-order mapping.Wherein, the regenerated electric power that the d shaft current instruction Id* in usual vector majorization process describes in detail below suppresses to be utilized as variable Id_tmp in process #200.
Suppress, in process #200, to perform zero direct torque regenerative torque of motor MG being set to zero [ Nm ] at regenerated electric power.As shown in Figure 4, when performing regenerated electric power and suppressing process #200, first computing torque rate of change Δ T [ N/s ] (#201).This torque rate of change Δ T is that the maximum of rate of change of regenerated electric power in the scope that can control based on motor MG and rotating speed N [ rmp ] (the rotary speed ω) of electric power variation rate Δ W [ kW/s ] and current motor MG carry out computing.
Next, judge whether this torque rate of change Δ T exceedes the usual torque rate of change limits value LT1(#202 of torque rate of change).When torque rate of change Δ T exceedes usual torque rate of change limits value LT1, adopt the above-mentioned torque rate of change Δ T calculated as torque rate of change Δ T(#203).On the other hand, when torque rate of change Δ T is usual torque rate of change below limits value LT1, set usual torque rate of change limits value LT1 as torque rate of change Δ T(#204).That is, owing to suppressing in process at regenerated electric power, preferably reduce torque as early as possible and realize zero direct torque, so use as far as possible large torque rate of change Δ T.Wherein, in fact the maximum based on the torque rate of change Δ T of electric power variation rate Δ W and rotating speed N computing is limited by electric power variation rate Δ W.In the present embodiment, the limits value of about 5 ~ 6 times of usual torque rate of change limits value LT1 is roughly become.
General when making torque instruction T* change, in order to ensure the traceability controlled or control and sharply change the vibration of accompanying and arrange restriction to torque rate of change Δ T.But when battery 3 becomes dissengaged positions with the connection of inverter 5, in order to reduce regenerated electric power rapidly, preferred regenerative torque also reduces rapidly.Therefore, preferably large torque rate of change Δ T can be allowed in the scope of Tracing Control.As mentioned above, when execution zero direct torque, be preferably the limits value LT of torque rate of change and be set to than maintaining the limits value of battery 3 and the torque rate of change under the state of the connection of inverter 5 that is torque rate of change limits value LT1 is large usually value.As the step #201 with reference to Fig. 4 describing above, torque rate of change Δ T is that the maximum of rate of change of regenerated electric power in the scope that can control based on motor MG and rotating speed N [ rmp ] (the rotary speed ω) of electric power variation rate Δ W [ kW/s ] and current motor MG carry out computing.Therefore, the limits value LT of torque rate of change is become based on the rotating speed N of the regulation in usage range and the torque rate of change Δ T of electric power variation rate Δ W.In fact, electric power variation rate Δ W specifies the limits value LT of torque rate of change.
In addition, torque rate of change Δ T can take different values according to the rotary speed of motor MG, but mostly uses constant value in common control.But, when battery 3 becomes dissengaged positions with the connection of inverter 5, preferably make regenerated electric power reduce rapidly.Therefore, preferably inverter 5 is controlled be, with the regenerative torque vanishing of motor MG can be made by large torque rate of change Δ T in the scope of Tracing Control.As mentioned above, torque rate of change Δ T when preferably making the regenerative torque of motor MG be reduced to zero is according to the rotating speed N(rotary speed ω of motor MG) be variably set.As the step #201 with reference to Fig. 4 describing above, torque rate of change Δ T is that the maximum of rate of change of regenerated electric power in the scope that can control based on motor MG and rotating speed N [ rmp ] (the rotary speed ω) of electric power variation rate Δ W [ kW/s ] and current motor MG carry out computing.That is, torque rate of change Δ T is configured to be inversely proportional to rotating speed N(rotary speed (ω), and rotating speed N is less then larger.
Then, computing makes torque change until by torque from transit time t [ s ] (#205) required the final goal torque T** vanishing of current time with torque rate of change Δ T.That utilize this value is high damage control process #300 described later, so transit time t also can computing in high damage control process #300 due to actual.Next, whether the control model of judgement current time is pwm pattern (#206).Do not controlled by with pwm pattern at motor MG, but when being controlled with such as rectangular-wave control mode, do not move to high damage control process #300, final goal torque T** is being set as on the basis of zero, perform square wave and control (#208, #209).Controlling this is because rectangular-wave control mode is voltage-phase, the high damage control absolute value of d shaft current being increased by controlling current phase cannot being carried out.When the control model of current time is pwm pattern, perform high damage control process #300.
As shown in Figure 5, initial at high damage control process #300, Id_loss is as variable for the instruction of setting high loss d shaft current, step #106 with reference to Fig. 3 is brought into this variable and at the current d shaft current instruction Id* of the Id_tmp(described above) (#301).Next, judge whether motor MG is in regeneration operating according to the relation of torque instruction T* and rotating speed N, i.e. whether unrealized zero direct torque (#302).When realizing zero direct torque, move to convergence process described later (#351 ~ #356 of Fig. 6) ($ 1).
When being judged to not realize zero direct torque in step #302, the variation delta Id(#303 of each unit interval of computing d shaft current instruction Id*).As mentioned above, suppress, in process, to perform zero direct torque at regenerated electric power.Therefore, by the value Id_o of the d shaft current at center (operating point P2) place of voltage velocity ellipse 300 and the current value of d shaft current instruction and the difference of Id_loss divided by above-mentioned transit time t [ s ], carry out the variation delta Id of the d shaft current of computing each unit interval.That is, calculating can according to until makes torque transfer be the variation delta Id of the d shaft current of each unit interval that zero required transit time t [ s ] changes with torque rate of change Δ T.Wherein, when the mode set action point P2 identical with the difference of the value of the d shaft current of the value of the d shaft current at operating point P1 place and the difference of the value of the d shaft current at operating point P0 place and the value of the d shaft current at operating point P1 place and operating point P2 place, if symbol is suitably adjusted, then the value at center (operating point P0) place of constant current circle 200 can be used as Id_o.
Then, final goal torque T** is set to zero (#304).And inverter control portion 11 is towards final goal torque T**(=0) direction on deduct torque rate of change Δ T from current torque instruction T*, upgrade torque instruction T*(#305).Inverter control portion 11, based on the torque instruction T* after renewal, maps the value (#306) obtaining the instruction of d shaft current Id*, q shaft current instruction Iq* with reference to current-order.Due to current-order when this d shaft current instruction Id* is maximum torque control, Energy optimization control, so lose low.Therefore, consume the high damage control of regenerated electric power to realize increasing loss, in the same manner as weakening excitation con-trol, strengthening excitation con-trol etc., d shaft current instruction Id* adjusts electric current according to excitation and is adjusted.
When excitation adjusts, first inverter control portion 11 adds the variation delta Id of the d shaft current instruction Id* obtained in step #303 to the value i.e. high loss d shaft current instruction Id_loss of the d shaft current instruction Id* of current time, carrys out the value (#307) of more new peak loss d shaft current instruction Id_loss.Next, obtain the loss of the height after renewal d shaft current instruction Id_loss and map with reference to current-order and the difference of d shaft current instruction Id* that obtains, the excitation adjusted value Id_AFR(#308 using as d shaft current).The value of this excitation adjusted value Id_AFR can with weaken excitation con-trol, strengthen excitation con-trol time the adjusted value that utilizes in the same manner as process.Therefore, when carrying out excitation adjustment when the high damage control, can not add new calculation function and share to weaken excitation con-trol, enhancing excitation con-trol and the function part for preparing.
By the value of adjustment d shaft current instruction Id*, the operating point in torque line such as to make move.Therefore, the value also change of q shaft current instruction Iq*.So inverter control portion 11, based on the excitation adjusted value Id_AFR of torque instruction T* and d shaft current, maps referring again to current-order and obtains high loss q shaft current instruction Iq_loss(#309).Then, the height obtained in step #307 loss d shaft current instruction Id_loss and the height loss q shaft current instruction Iq_loss that obtains in step #309 is set as the instruction of d shaft current Id*, q shaft current instruction Iq*(#310 respectively).Above, step #302 ~ step #310 is repeated to till motor MG realizes zero direct torque.
If realize zero direct torque of motor MG by the execution repeatedly of step #302 ~ step #310, then next move to the convergence process #350(#302 → $ 1 making d shaft current become the current value (being zero) at the operating point P0 place at the center of constant current circle 200 here).As shown in Figure 6, when convergence process #350 starts, d shaft current instruction Id_0Nm_loss when setting convergence as variable.The current d shaft current instruction Id* of above-mentioned height loss d shaft current instruction Id_loss(is substituted into d shaft current instruction Id_0Nm_loss during this convergence) (#351).Then, whether acts of determination point reaches the center (operating point P0) (#352) of constant current circle 200.In the present embodiment, the d shaft current due to operating point P0 is zero, moves closer in zero, so judge that whether d shaft current instruction Id* is as more than zero from negative value.If be judged to be that in step #352 d shaft current instruction Id* is not less than zero, then move to usual control of discharge process #357 from no branch.Usual control of discharge process #357 is such as the shutdown (disconnection of all switch elements) etc. of inverter 5.If control of discharge process #357 is complete usually, then terminates regenerated electric power and suppress process #200.
When being judged to be that in step #352 d shaft current instruction Id* does not reach zero, during convergence, d shaft current instruction Id_0Nm_loss is upgraded the amount (#353) suitable with the variation delta Id of above-mentioned d shaft current instruction Id* by the direction at the center (operating point P0) of justifying to constant current.Next, when judging the convergence after upgrading, whether d shaft current instruction Id_0Nm_loss is less than zero (#354).When d shaft current instruction Id_0Nm_loss is not less than zero during convergence in the updated, if such as more than zero, then there is positive value and cause exceeding operating point P0.In addition, d shaft current instruction Id_0Nm_loss is zero when restraining, operating point P0 is just in time reached.Therefore, d shaft current instruction Id_0Nm_loss being more than zero when restraining, d shaft current instruction Id* and q shaft current instruction Iq* being set as zero, operating point being set to the center (operating point P0) of constant current circle.
When convergence after upgrading in step #354, d shaft current instruction Id_0Nm_loss is less than zero, need also to proceed convergence process towards the center (operating point P0) of constant current circle.Therefore, d shaft current instruction Id_0Nm_loss during convergence is set as d shaft current instruction Id*, repeatedly carries out step #352 ~ #354(#355).Wherein, owing to realizing zero direct torque, so the value * of q shaft current instruction Iq is set to zero (#355).In addition, also can based on d shaft current instruction Id_0Nm_loss(d shaft current instruction Id* when torque instruction T* and convergence in the same manner as the step #309 of Fig. 5) and map with reference to current-order and set q shaft current instruction Iq*.
In addition; also differently can be configured to when the voltage between terminals of the second smmothing capacitor Q2, i.e. system voltage Vdc become more than the overvoltage threshold value of regulation with each process shown in the flow chart of Fig. 3 ~ Fig. 6, the shutdown (shutdown) that inverter control portion 11 performs inverter 5 controls.Overvoltage threshold value is now the value larger than the decision threshold TH1 shown in the step #102 of Fig. 3.Here, the control controlling to refer to the whole switch element E3 ~ E8 forming inverter 5A, the whole switch element E9 ~ E14 forming inverter 5B are switched to off-state is shut down.Under the state that inverter 5 is shut down, from the electric current of motor MG through for each switch element E3 ~ E14 sustained diode 3 ~ D14 of anti-parallel connection and circulation respectively, reduce gradually.
As described above, according to the present invention, when the connection of the drive unit 1 with battery 3 that possess inverter 5 is cut-off, the regenerated electric power regenerated via inverter 5 from motor MG can be made to reduce rapidly.Specifically, inverter control portion 11 employs the high damage control of exciting current by performing together with zero direct torque, can reduce regenerated electric power rapidly.In addition, so that when moving to zero direct torque, increase the limits value of torque rate of change and allow than torque rate of change large during common control, to make rapidly regenerative torque reduce than torque rate of change large during common control.Therefore, compared with gimmick in the past, regenerated electric power can be reduced rapidly.Such as, owing to realizing space saving, the cost degradation of control device 10, even if so reduce the electric capacity of smmothing capacitor (Q2), also can with in the past equal or exceed the both end voltage ago suppressing system voltage Vdc(smmothing capacitor) rising.
(other execution modes)
Below, other execution modes of the present invention are described.Wherein, the formation of each execution mode below illustrated is not limited to individually use, only otherwise conflict, then also can with the formation Combination application of other execution modes.
(1) rotary electric machine controller in the above-described embodiment, controlled for the drive device for hybrid vehicle (electric rotating machine drive unit) to double motor partitioning scheme is illustrated, when the present invention is not limited to this example.As shown in Figure 7, also can be the rotary electric machine controller that the drive unit of a driving electric rotating machine is controlled.In addition, in the above-described embodiment, the situation possessing transducer 4 for drive unit 1 is illustrated, but also can not possess transducer as shown in Figure 8 and form drive unit 1.
(2) in the above-described embodiment, as the high damage control, describing the d shaft current (exciting current) making to be helpless to torque increases the example improving loss.But those skilled in the art also can make loss increase by additive method, reduce regenerated electric power.Such as, if the modulating frequency making PWM control (carrier frequency) rises, then the on-off times of unit interval increases, and loss can increase.Technical characteristic of the present invention is to perform the high damage control employing exciting current together with zero direct torque, but does not get rid of and increase loss by additive method.
Industrial utilizability
The present invention can be applicable to the rotary electric machine controller controlled the electric rotating machine drive unit possessing inverter, this inverter is folded in be possessed between the DC power portion of electrical storage device and the electric rotating machine exchanged, thus carries out power converter between the direct current power and the alternating electromotive force of electric rotating machine of DC power portion.
Description of reference numerals
Δ T: torque rate of change; ω: rotary speed; 1: drive unit (electric rotating machine drive unit); 3: battery (DC power portion); 5: inverter; 5A: the first inverter; 5B: the second inverter; 10: control device (rotary electric machine controller); 11: inverter control portion; D1 ~ D14: fly-wheel diode; E3, E5, E7, E9, E11, E13: upper arm element (switch element); E4, E6, E8, E10, E12, E14: underarm element (switch element); MG: motor (electric rotating machine); MG1: the first motor (electric rotating machine); MG2: the second motor (electric rotating machine); N: rotating speed; Q2: the second smmothing capacitor (smmothing capacitor); TM: target torque; T*: torque instruction; Vdc: system voltage; TH1: decision threshold; LT: the limits value of torque rate of change.
Claims (5)
1. a rotary electric machine controller, it is the rotary electric machine controller controlled the electric rotating machine drive unit possessing inverter, this inverter is folded in be possessed between the DC power portion of electrical storage device and the electric rotating machine exchanged, thus power converter is carried out between the direct current power and the alternating electromotive force of described electric rotating machine of described DC power portion, wherein
Described rotary electric machine controller possesses inverter control portion, this inverter control portion is in the orthogonal coordinate system of 2 axles of the rotation synchronous rotary with described electric rotating machine, control to control described inverter along the exciting current of each axle of this orthogonal coordinate system and the composite vector of drive current and armature supply
The connection of described inverter control portion to described DC power portion and described inverter is that dissengaged positions judges, when being judged to be this dissengaged positions, described inverter control portion performs and controls described inverter to make zero direct torque of the regenerative torque vanishing of described electric rotating machine, and perform and described exciting current is changed to increase the high damage control of described armature supply while maintaining the torque instruction in described zero direct torque
Described drive current is made to reduce and make it close to zero, and make the absolute value of described exciting current increase and described armature supply is increased, after described drive current reaches zero, under the state making described drive current be maintained zero, described exciting current is reduced until described exciting current becomes zero.
2. rotary electric machine controller according to claim 1, wherein,
When performing described zero direct torque under described dissengaged positions, the limits value of torque rate of change when making the regenerative torque of described electric rotating machine be reduced to zero is gradually set as the value that the limits value of the torque rate of change under the state be maintained than the connection of described DC power portion and described inverter is large by described inverter control portion.
3. rotary electric machine controller according to claim 1, wherein,
When performing described zero direct torque under described dissengaged positions, described inverter control portion sets torque rate of change when making the regenerative torque of described electric rotating machine be reduced to zero gradually changeably according to the rotary speed of described electric rotating machine.
4. rotary electric machine controller according to claim 2, wherein,
When performing described zero direct torque under described dissengaged positions, described inverter control portion sets torque rate of change when making the regenerative torque of described electric rotating machine be reduced to zero gradually changeably according to the rotary speed of described electric rotating machine.
5. rotary electric machine controller as claimed in any of claims 1 to 4, wherein,
Described inverter is configured to have multiple switch element and has the fly-wheel diode be connected with each anti-parallel connection of described switch element,
Even if after becoming described dissengaged positions described inverter direct current positive and negative polarities between the voltage between terminals of smmothing capacitor that is also maintained of connection when becoming more than the overvoltage threshold value of regulation, described inverter control portion performs the shutdown making the whole described switch element of the described inverter of formation become off-state and controls.
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2012
- 2012-06-15 CN CN201280025896.8A patent/CN103563237B/en active Active
- 2012-06-15 WO PCT/JP2012/065361 patent/WO2013002043A1/en active Application Filing
- 2012-06-15 US US14/112,390 patent/US9106174B2/en active Active
- 2012-06-15 DE DE112012001311.5T patent/DE112012001311T5/en active Pending
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CN101960706A (en) * | 2008-08-06 | 2011-01-26 | 日立汽车***株式会社 | Semiconductor device and power converter using the semiconductor device |
Also Published As
Publication number | Publication date |
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JP5645083B2 (en) | 2014-12-24 |
US20140232304A1 (en) | 2014-08-21 |
US9106174B2 (en) | 2015-08-11 |
JP2013013198A (en) | 2013-01-17 |
CN103563237A (en) | 2014-02-05 |
WO2013002043A1 (en) | 2013-01-03 |
DE112012001311T5 (en) | 2014-01-02 |
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